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Chifine
Dim(X) | PCD(Y) | Bolt | Bearing |
192.4 | 139.7 | 6*1/2" | LM67048/LM11949 |
192.4 | 139.7 | 6*1/2" | L68149/LM12749 |
138.8 | 108 | 5*7/16" | LM67048/LM11949 |
152.4 | 108 | 5*7/16" | LM67048/LM11949 |
152.4 | 120.65 | 5*7/16" | LM67048/LM11949 |
152.4 | 114.3 | 5*1/2" | LM67048/LM11949 |
152.4 | 108 | 5*7/16" | L68149/LM12749 |
152.4 | 120.65 | 5*7/16" | L68149/LM12749 |
152.4 | 114.3 | 5*1/2" | L68149/LM12749 |
138.8 | 101.6 | 4*7/16" | LM67048/LM11949 |
183.5 | 139.7 | 6*1/2" | 25580/15123 |
152.4 | X | 5*1/2" | L68149/LM12749 |
Qingdao Chifine Machinery specializes in boat trailer axle idler wheel hub kits (without brake), designed for agricultural and marine trailer applications. Our wheel hubs are made from high-quality cast iron (SAE G3500) with a Brinell Hardness of 187-255 and tensile strength of 250MPa min., ensuring durability in marine and outdoor environments. We offer multiple sizes (4-4” to 8-6.5”) and support a monthly supply capacity of 10,000 pieces, with HS code 8716900000 for easy international shipping.
High-Strength Cast Iron Material: We use SAE G3500 cast iron for wheel hubs, which provides excellent impact resistance and load-bearing capacity. This material is critical for trailer axle hubs, as it withstands the weight of boats/agricultural cargo and the stress of road travel.
Precision Sizing Options: We offer sizes including 4-4”, 5-4.5”, 5-4.75”, 5-5”, 5-5.5”, 6-5.5”, 8-6.5”. These sizes are compatible with most boat and agricultural trailer models, ensuring customers find the right fit without modifications.
Corrosion-Resistant Surface Treatments: Surface treatment options include painted black, galvanized, e-coating, and dacromet. Galvanized and dacromet are ideal for boat trailers (resisting saltwater), while painted black and e-coating suit agricultural trailers (resisting mud and moisture).
High-Quality Component Integration: Our kits include SAE-Grade 8 studs (1/2-20UNF-2A) with tensile strength 150,000 PSI min. and proof strength 120,000 PSI min., plus high-performance bearings (e.g., L-44610, LM-67010). These components ensure smooth wheel rotation and safe trailer operation.
Strict Quality Testing: Each hub kit undergoes dimensional inspection (to verify fit with axles) and bearing fitment testing (to ensure smooth rotation). We also test material hardness and tensile strength to confirm compliance with SAE G3500 standards.
Boat trailers are exposed to saltwater; we provide galvanized or dacromet-coated wheel hubs. Galvanizing forms a zinc layer that resists saltwater corrosion, while dacromet offers superior chemical resistance—both prevent rust and extend hub life, even with frequent launching and retrieval of boats. The high-strength cast iron also supports the weight of boats (up to 5-10 tons, depending on size).
Agricultural trailers operate in muddy, dusty fields; we offer painted black or e-coated hubs. Painted black provides a cost-effective barrier against mud and dust, while e-coating (electrophoretic coating) offers better adhesion and corrosion resistance for long-term use in farm environments. The hubs’ load-bearing capacity supports agricultural cargo like grain, hay, or farm equipment.
For small utility trailers (e.g., for landscaping), we supply 4-4” or 5-4.5” hub kits with lightweight yet strong cast iron. These smaller hubs are designed for trailers with lower weight capacity (up to 2 tons), ensuring easy installation and compatibility with small axles. The painted black finish resists dirt and moisture common in landscaping work.
Large agricultural trailers (e.g., for grain transport) use 6-5.5” or 8-6.5” hub kits with SAE-Grade 8 studs. The larger size and high-strength studs support heavy loads (up to 15 tons), ensuring safe highway transport of grain or other bulk agricultural products. We recommend galvanized coating for these hubs to resist road salt in rural areas with winter snow.
We provide detailed dimension tables (Dim(X), PCD(Y), Bolt, Bearing) to help customers match hub kits to their trailer axles. For example, a hub with 192.4mm Dim(X) and 139.7mm PCD(Y) uses 6*1/2” bolts and LM67048/LM11949 bearings, suitable for medium-duty boat trailers. Our team also assists with axle measurement guidance to ensure correct sizing.
We recommend appropriate bearings based on trailer weight and usage frequency. For light-duty trailers (up to 2 tons), we suggest LM67048/LM11949 bearings (cost-effective and reliable). For heavy-duty trailers (over 10 tons), we recommend 25580/15123 bearings (high load capacity). We also explain bearing maintenance tips (e.g., lubrication frequency) to extend service life.
We offer technical documents with step-by-step installation instructions. These documents include photos of hub assembly, torque specifications for studs, and safety checks (e.g., verifying bearing preload). Clear installation guidance ensures customers (or their mechanics) install hubs correctly, preventing premature wear or safety issues.
We support monthly orders of up to 10,000 pieces, with competitive pricing for large-volume purchases. Our production line can scale to meet bulk orders for trailer manufacturers or distributors, ensuring consistent quality and on-time delivery. We also offer flexible payment terms for bulk customers.
We accept requests for non-standard sizes or surface treatments, tailoring hub kits to specific trailer models. For example, we can produce hubs with custom bolt patterns for unique trailer designs or special coating colors for brand consistency. Our engineering team works with customers to develop custom specifications and validate designs.
Each shipment includes a quality certificate, verifying material properties (Brinell Hardness, tensile strength) and dimensional accuracy. We also conduct random sampling tests on each batch to ensure compliance with SAE G3500 standards. If customers receive defective parts, we offer free replacements per our quality guarantee policy.
Dim(X) | PCD(Y) | Bolt | Bearing |
192.4 | 139.7 | 6*1/2" | LM67048/LM11949 |
192.4 | 139.7 | 6*1/2" | L68149/LM12749 |
138.8 | 108 | 5*7/16" | LM67048/LM11949 |
152.4 | 108 | 5*7/16" | LM67048/LM11949 |
152.4 | 120.65 | 5*7/16" | LM67048/LM11949 |
152.4 | 114.3 | 5*1/2" | LM67048/LM11949 |
152.4 | 108 | 5*7/16" | L68149/LM12749 |
152.4 | 120.65 | 5*7/16" | L68149/LM12749 |
152.4 | 114.3 | 5*1/2" | L68149/LM12749 |
138.8 | 101.6 | 4*7/16" | LM67048/LM11949 |
183.5 | 139.7 | 6*1/2" | 25580/15123 |
152.4 | X | 5*1/2" | L68149/LM12749 |
Qingdao Chifine Machinery specializes in boat trailer axle idler wheel hub kits (without brake), designed for agricultural and marine trailer applications. Our wheel hubs are made from high-quality cast iron (SAE G3500) with a Brinell Hardness of 187-255 and tensile strength of 250MPa min., ensuring durability in marine and outdoor environments. We offer multiple sizes (4-4” to 8-6.5”) and support a monthly supply capacity of 10,000 pieces, with HS code 8716900000 for easy international shipping.
High-Strength Cast Iron Material: We use SAE G3500 cast iron for wheel hubs, which provides excellent impact resistance and load-bearing capacity. This material is critical for trailer axle hubs, as it withstands the weight of boats/agricultural cargo and the stress of road travel.
Precision Sizing Options: We offer sizes including 4-4”, 5-4.5”, 5-4.75”, 5-5”, 5-5.5”, 6-5.5”, 8-6.5”. These sizes are compatible with most boat and agricultural trailer models, ensuring customers find the right fit without modifications.
Corrosion-Resistant Surface Treatments: Surface treatment options include painted black, galvanized, e-coating, and dacromet. Galvanized and dacromet are ideal for boat trailers (resisting saltwater), while painted black and e-coating suit agricultural trailers (resisting mud and moisture).
High-Quality Component Integration: Our kits include SAE-Grade 8 studs (1/2-20UNF-2A) with tensile strength 150,000 PSI min. and proof strength 120,000 PSI min., plus high-performance bearings (e.g., L-44610, LM-67010). These components ensure smooth wheel rotation and safe trailer operation.
Strict Quality Testing: Each hub kit undergoes dimensional inspection (to verify fit with axles) and bearing fitment testing (to ensure smooth rotation). We also test material hardness and tensile strength to confirm compliance with SAE G3500 standards.
Boat trailers are exposed to saltwater; we provide galvanized or dacromet-coated wheel hubs. Galvanizing forms a zinc layer that resists saltwater corrosion, while dacromet offers superior chemical resistance—both prevent rust and extend hub life, even with frequent launching and retrieval of boats. The high-strength cast iron also supports the weight of boats (up to 5-10 tons, depending on size).
Agricultural trailers operate in muddy, dusty fields; we offer painted black or e-coated hubs. Painted black provides a cost-effective barrier against mud and dust, while e-coating (electrophoretic coating) offers better adhesion and corrosion resistance for long-term use in farm environments. The hubs’ load-bearing capacity supports agricultural cargo like grain, hay, or farm equipment.
For small utility trailers (e.g., for landscaping), we supply 4-4” or 5-4.5” hub kits with lightweight yet strong cast iron. These smaller hubs are designed for trailers with lower weight capacity (up to 2 tons), ensuring easy installation and compatibility with small axles. The painted black finish resists dirt and moisture common in landscaping work.
Large agricultural trailers (e.g., for grain transport) use 6-5.5” or 8-6.5” hub kits with SAE-Grade 8 studs. The larger size and high-strength studs support heavy loads (up to 15 tons), ensuring safe highway transport of grain or other bulk agricultural products. We recommend galvanized coating for these hubs to resist road salt in rural areas with winter snow.
We provide detailed dimension tables (Dim(X), PCD(Y), Bolt, Bearing) to help customers match hub kits to their trailer axles. For example, a hub with 192.4mm Dim(X) and 139.7mm PCD(Y) uses 6*1/2” bolts and LM67048/LM11949 bearings, suitable for medium-duty boat trailers. Our team also assists with axle measurement guidance to ensure correct sizing.
We recommend appropriate bearings based on trailer weight and usage frequency. For light-duty trailers (up to 2 tons), we suggest LM67048/LM11949 bearings (cost-effective and reliable). For heavy-duty trailers (over 10 tons), we recommend 25580/15123 bearings (high load capacity). We also explain bearing maintenance tips (e.g., lubrication frequency) to extend service life.
We offer technical documents with step-by-step installation instructions. These documents include photos of hub assembly, torque specifications for studs, and safety checks (e.g., verifying bearing preload). Clear installation guidance ensures customers (or their mechanics) install hubs correctly, preventing premature wear or safety issues.
We support monthly orders of up to 10,000 pieces, with competitive pricing for large-volume purchases. Our production line can scale to meet bulk orders for trailer manufacturers or distributors, ensuring consistent quality and on-time delivery. We also offer flexible payment terms for bulk customers.
We accept requests for non-standard sizes or surface treatments, tailoring hub kits to specific trailer models. For example, we can produce hubs with custom bolt patterns for unique trailer designs or special coating colors for brand consistency. Our engineering team works with customers to develop custom specifications and validate designs.
Each shipment includes a quality certificate, verifying material properties (Brinell Hardness, tensile strength) and dimensional accuracy. We also conduct random sampling tests on each batch to ensure compliance with SAE G3500 standards. If customers receive defective parts, we offer free replacements per our quality guarantee policy.
